Water pinch technology is an efficient tool in the clean production. Application of water pinch technology can effectively save the fresh water in industry,and remarkably reduce the discharge of wastewater.Though water pinch technology is relatively mature in theory,and many enterprises such as petrochemical enterprises and chemical enterprises have applied successfully in practical operation,but report in metallurgical field is rare in the world.This paper introduced the principles of water pinch technology ,raised the procedures of applying it in Shougang Group.At last,taking a revamping project for water saving as example,this paper put forwards the scheme on optimization of water supply net.Application result showed that the effect of saving water was fairly good.